Automatic train-stop.



H. F. W` KOHLBACH.

AUTOMATIC TRAIN STOP.

APPLICATION man AFR.25, 1913.

Patente May 25, 1915.

@Evi/1:14am@ WTE@ STATES PATENT FFIQE.

HENRY F. W. KOI-ILBACI-I, OF NEW BEDFORD, MASSACHUSETTS.

AUTOMATIC TRAIN-STOP.

inmenso.

Application filed Apr125, 1913.

To all whom it may concern:

Be it known that I, HENRY F. W. KoHL- BACH, a citizen of the United States, residing at New Bedford, in the county of Bristol, State of Massachusetts, have invented certain new and useful Improvements in Automatic Train-Stops; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in train stopping devices and particularly to devices for automatically applying the air brakes when an attempt is made to run past a danger signal.

The principal object of the invention is to provide a simple structure operable from the signal tower, so that when a semaphore signal is set to danger, a trip will be thrown into operative position to be struck by a valve carried by the engine to exhaust the air from the train pipe of the brake system.

Other objects and advantages will be apparent from the following description, when taken in connection with the accompanying drawings. A

In the drawings: Figure 1 is a side elevation of my device showing a locomotive pilot and coperating parts. Fig. 2 is a plan view. Fig. 3 is a vertical longitudinal sectional view on the line 3-3 of Fig. 2. Fig. 4 is `a vertical cross section on the line 4 4 of Fig. 3.

Referring particularly to the accompanying drawings, 10 represents several of the ties which are extended to one side of the railway 11 and on which my device is supported. The pilot of the locomotive is shown at 12, 13 being a forward extension of the train pipe of the air brake system, 14 the valve which is mounted on the pilot at one side, and 15 the handle of this valve or angle cock which is adapted to be moved by a portion of my device which will now be described.

My device includes a housing 16 which has a base 17 secured on the beforementioned ties 10. Mounted on the top of the box or housing at one end, is the signal post 18, this post having a vertical shaft 19 extending vertically through it and provided on its upper end with a beveled pinion 20 for engagement with the beveled pinion 21 carried by the semaphore arm 22 pivoted on the upper end of said post. The upper Specification of Letters Patent.

Patented May 25, 1915.

Serial No. 763,598.

end of this shaft above the pinion 20 carries a lamp 23 in front of which the eye 24 of the semaphore arm is adapted to be moved.

Mounted on the bottom of the housing 16 and projecting through an opening 25 in the end of the housing next to the railway, is a bar 26, the inner end of which is provided with rack teeth 27 for engagement with a pinion 28 carried by the lower end of the shaft 19. The outer end of the bar 26 has an upturned portion 29 which when the bar is projected beyond the housing, will be engaged by the handle 15 of the angle cock 14 to open said cock. The bar is suitably guided at 30, and projecting above the bar 26 is the post 31, this post being secured to the bar 26 and being adapted to engage the stops 32 mounted within the housing. In the end of the housing adjacent the opening 25 is a pulley 33, and drawn around this pulley is a cable 34, one end being secured to an eye 35 at one side of the post 31. Secured to a similar eye 36 on the other side of the post 31 is another cable 37, these two cables 34 and 37 extending through openings 38 in the opposite end of the housing and terminating at the signal tower where they are suitably connected to means for pulling them. rIhis mechanism in the signal tower is not shown, and forms no part of my invention.

From the foregoing, it will readily be seen that upon pulling on the cable 34, that the bar 26 will be projected so that its end 29 will be in line to be engaged by the handle 15, while at the same time the rack 27 rotates the shaft 19 and raises the semaphore arm 22 to danger position. Should an attempt be made to run past the danger signal, the handle 15 would be swung so that the angle cock would drain the train line and make an emergency application of the air brakes to stop the train and avoid an accident. Upon pulling on the cable 37, the bar 26 is withdrawn into the housing, rotating the shaft 19 in the opposite direction and depressing the arm 22 into clear position.

Arranged in the housing is an electric heater 39, which will prevent the parts freezing in cold weather.

lhat is claimed is:

In a device for actuating the angle cock of a railway brake system, a housing mounted adjacent the railway, a semaphore signal inoluding a vertical shaft extending into the Connected to the post for moving the rack l) housing, a pinion carried by the loWer end bar.

of the shaft Within the housing, a. horizon- In testimony whereof I aIiX my signature tally slidztble rack bar arranged in the housin the presenee of Witnesses.

ing and engaging said pinion, one end of HENRY F. WfKOHLBACH. said rack bar projecting beyond the hous-' Witnesses: Y

ing, a Vertical post carried by the rack bar, CHAS. N. RICHMOND,

stops for engagement by the post to limit MARY H. P. SWEET,

the movement of the rack bar, and cables EVELYN L. JONES.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of latents, Washington, D. C. 

